Home / 147,622,720.80-221,434,081.20-86,148,775.20

Finding the Fourth Proportional to 147,622,720.80, 221,434,081.20 and 86,148,775.20

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Solution

The fourth proportional to 147,622,720.80, 221,434,081.20 and 86,148,775.20 is: 129,223,162.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,622,720.80 : 221,434,081.20 = 86,148,775.20 : x
  2. Step 2: Convert to fraction form
    147,622,720.80/221,434,081.20 = 86,148,775.20/x
  3. Step 3: Cross multiply
    147,622,720.80x = 221,434,081.20 × 86,148,775.20
  4. Step 4: Simplify right side
    147,622,720.80x = 19,076,274,882,917,344
  5. Step 5: Solve for x
    x = 19,076,274,882,917,344/147,622,720.80
  6. Step 6: Final answer
    x = 129,223,162.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.